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dybincka [34]
2 years ago
14

Help me please urgent

Mathematics
1 answer:
asambeis [7]2 years ago
7 0

Let \:  x  \: be  \: the \:  number \:  of \:  hours \\ Expession: - 4.5x =  - 27\Leftrightarrow x =  \frac{ - 27}{ - 4.5}  = 6 \: hours

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Jarvis has the following averages in his math
ollegr [7]

Answer:

≈77

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached photo.

My answer:

Given:

  • Homework Avg: 93
  • Quiz Avg: 84
  • Test Avg: 72
  • Final Exam: 60

and weights Homework at 20%, Quizzes at 30%, Tests at 40%, and the final exam at 10%

=>Jason's class average is:

=  80*20% + 84*30%+74*40%+60*10%

=  80*0.2 + 84*0.3+74*0.4+60*0.1

= 76.8

≈77

8 0
3 years ago
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(y-1)(y^2+2y+1) <br> Simplify please
sashaice [31]

Do like this

(y - 1)(y² + 2y + 1)

y³ + 2y² + y - y² - 2y² - 1

y³ - 1

This is end result


3 0
3 years ago
A drawer contains loose socks. there are 2 blue and 4 black socks in the drawers. what is the probability that you choose a sock
otez555 [7]

|\Omega|=6\cdot5=30\\|A|=4\cdot3=13\\\\P(A)=\dfrac{12}{30}=\dfrac{2}{5}=40\%

4 0
1 year ago
Lexi is making an orange drink for party. She puts 4 pints of orange drink and 2 pints of water into a punch bowl. Her friend Ol
Nina [5.8K]
I think she can add 5p more of orange which is 9p and 6p more water which is 8p. I'm pretty sure this works because 9 is the next closest multiple of 3 and 8 is one number less than that. Hope this helps!
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3 years ago
45 – (–32) + (–12) – |–7|
mash [69]

Answer:

Simplify the expression.

58

Step-by-step explanation:

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3 years ago
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